measuring magnifying glasses
...Barrel gauges, pin gauges, thread-wire gauges 桶规、栓规、螺纹规 Measuring magnifying glasses 测量放大镜 Measuring slabs of cast metal and hard minerals 铸造金属和硬矿物制成的测量板 ..
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measuring magnifying glasses
测量放大镜
以上为机器翻译结果，长、整句建议使用 人工翻译 。